Gentoo Linux Security Advisory GLSA 200701-06 – w3m in -dump or -backend mode does not correctly handle printf() format string specifiers in the Common Name (CN) field of an X.509 SSL certificate. Versions less than 0.5.1-r4 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/53638/glsa-200701-06.txt
Source: https://packetstormsecurity.com/files/53638/Gentoo-Linux-Security-Advisory-200701-6.html